公开(公告)号：US09355789B2

公开(公告)日：2016-05-31

申请号：US14271901

申请日：2014-05-07

Applicant: Greatbatch Ltd.

Inventor： Paul W. Krehl ,  Marcus J. Palazzo

IPC: H01G11/06 ,  H01M2/14 ,  H01M2/16 ,  H01G11/84 ,  H01G11/46 ,  H01M2/34 ,  H01M6/16 ,  H01M2/22 ,  H01M4/485 ,  H01M4/54 ,  H01M4/58 ,  H01M10/058

CPC classification number: H01G11/06 ,  H01G11/46 ,  H01G11/84 ,  H01M2/1613 ,  H01M2/22 ,  H01M2/34 ,  H01M4/485 ,  H01M4/54 ,  H01M4/5815 ,  H01M4/582 ,  H01M6/16 ,  H01M10/058 ,  Y10T29/417 ,  Y10T29/49108

Abstract: The prevention of lithium clusters from bridging between the negative and positive portions of a cell during discharge is described. This is done by providing a glass wool material at an intermediate location between the casing and anode current collector of a negative polarity and the cathode current collector and the terminal pin being of a positive polarity. Typically, a lithium ion concentration gradient sufficient to cause lithium cluster formation is induced by the high rate, intermittent discharge of a lithium/silver vanadium oxide (Li/SVO) cell. However, sufficient free electrolyte necessary for normal cell function is held in the relatively large pore volume throughout the extent of the glass wool material. Moreover, permeability within the glass wool material is tortuous, which effectively increases the distance between the negative and positive surfaces of the anode and cathode. This tortuosity effectively stops “straight line” dendrite growth of lithium clusters between opposite polarity structures inside the casing.

Abstract translation: 描述了在放电期间防止锂簇在电池的负极部分和正极部分之间的桥接。 这通过在负极性的壳体和阳极集电体之间的中间位置提供玻璃棉材料，并且阴极集电器和端子销具有正极性来实现。 通常，通过锂/银钒氧化物（Li / SVO）电池的高速率间歇放电，引起足以引起锂簇形成的锂离子浓度梯度。 然而，正常的细胞功能所需的足够的游离电解质在玻璃棉材料的整个范围内被保持在相对大的孔体积中。 此外，玻璃棉材料内的渗透性是曲折的，这有效地增加了阳极和阴极的负面和正面之间的距离。 这种曲折有效地阻止了壳体内相对极性结构之间锂簇的“直线”枝晶生长。

公开(公告)号：US20140335394A1

公开(公告)日：2014-11-13

申请号：US14271901

申请日：2014-05-07

Applicant: Greatbatch Ltd.

Inventor： Paul W. Krehl ,  Marcus J. Palazzo

IPC: H01G11/06 ,  H01G11/46 ,  H01G11/84 ,  H01M2/16 ,  H01M2/14

CPC classification number: H01G11/06 ,  H01G11/46 ,  H01G11/84 ,  H01M2/1613 ,  H01M2/22 ,  H01M2/34 ,  H01M4/485 ,  H01M4/54 ,  H01M4/5815 ,  H01M4/582 ,  H01M6/16 ,  H01M10/058 ,  Y10T29/417 ,  Y10T29/49108

Abstract: The prevention of lithium clusters from bridging between the negative and positive portions of a cell during discharge is described. This is done by providing a glass wool material at an intermediate location between the casing and anode current collector of a negative polarity and the cathode current collector and the terminal pin being of a positive polarity. Typically, a lithium ion concentration gradient sufficient to cause lithium cluster formation is induced by the high rate, intermittent discharge of a lithium/silver vanadium oxide (Li/SVO) cell. However, sufficient free electrolyte necessary for normal cell function is held in the relatively large pore volume throughout the extent of the glass wool material. Moreover, permeability within the glass wool material is tortuous, which effectively increases the distance between the negative and positive surfaces of the anode and cathode. This tortuosity effectively stops “straight line” dendrite growth of lithium clusters between opposite polarity structures inside the casing.

Abstract translation: 描述了在放电期间防止锂簇在电池的负极部分和正极部分之间的桥接。 这通过在负极性的壳体和阳极集电体之间的中间位置提供玻璃棉材料，并且阴极集电器和端子销具有正极性来实现。 通常，通过锂/银钒氧化物（Li / SVO）电池的高速率间歇放电，引起足以引起锂簇形成的锂离子浓度梯度。 然而，正常的细胞功能所需的足够的游离电解质在玻璃棉材料的整个范围内被保持在相对大的孔体积中。 此外，玻璃棉材料内的渗透性是曲折的，这有效地增加了阳极和阴极的负面和正面之间的距离。 这种曲折有效地阻止了壳体内相对极性结构之间锂簇的“直线”枝晶生长。